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engines/saga2/band.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Based on the original sources
+ *   Faery Tale II -- The Halls of the Dead
+ *   (c) 1993-1996 The Wyrmkeep Entertainment Co.
+ */
+
+#ifndef SAGA2_BAND_H
+#define SAGA2_BAND_H
+
+namespace Saga2 {
+
+class Actor;
+class Band;
+
+/* ===================================================================== *
+   Function prototypes
+ * ===================================================================== */
+
+//  Allocate a new band
+Band *newBand();
+Band *newBand(BandID id);
+
+//  Delete a previously allocated band
+void deleteBand(Band *p);
+
+//  Get a band's ID given its address
+BandID getBandID(Band *b);
+//  Get a band's address given its ID
+Band *getBandAddress(BandID id);
+
+//  Initialize the band list
+void initBands();
+void saveBands(Common::OutSaveFile *outS);
+void loadBands(Common::InSaveFile *in, int32 chunkSize);
+//  Cleanup the band list
+void cleanupBands();
+
+/* ===================================================================== *
+   BandList class
+ * ===================================================================== */
+
+//  Manages the memory used for the Band's.  There will only be one
+//  global instantiation of this class
+class BandList {
+public:
+	enum {
+		kNumBands = 32
+	};
+
+	Band *_list[kNumBands];
+
+	//  Constructor -- initial construction
+	BandList();
+
+	//  Destructor
+	~BandList();
+
+	void read(Common::InSaveFile *in);
+
+	//  Return the number of bytes necessary to archive this task list
+	//  in a buffer
+	int32 archiveSize();
+
+	void write(Common::MemoryWriteStreamDynamic *out);
+
+	//  Place a Band from the inactive list into the active
+	//  list.
+	Band *newBand();
+	Band *newBand(BandID id);
+
+	void addBand(Band *band);
+
+	//  Place a Band back into the inactive list.
+	void deleteBand(Band *p);
+
+	//  Return the specified Band's ID
+	BandID getBandID(Band *b) {
+		for (int i = 0; i < kNumBands; i++)
+			if (_list[i] == b)
+				return i;
+
+		error("BandList::getBandID(): Unknown band");
+	}
+
+	//  Return a pointer to a Band given a BandID
+	Band *getBandAddress(BandID id) {
+		assert(id >= 0 && id < kNumBands);
+		return _list[id];
+	}
+};
+
+/* ===================================================================== *
+   Band class
+ * ===================================================================== */
+
+class Band {
+	enum {
+		kMaxBandMembers = 32
+	};
+
+	Actor       *_leader;
+
+	int16       _memberCount;
+	Actor       *_members[kMaxBandMembers];
+
+public:
+
+	Band();
+	Band(Actor *l);
+
+	Band(Common::InSaveFile *in);
+
+	~Band() { deleteBand(this); }
+
+	//  Return the number of bytes needed to archive this object in a
+	//  buffer
+	int32 archiveSize();
+
+	void write(Common::MemoryWriteStreamDynamic *out);
+
+	Actor *getLeader() {
+		return _leader;
+	}
+
+	bool add(Actor *newMember) {
+		if (_memberCount < ARRAYSIZE(_members)) {
+			_members[_memberCount++] = newMember;
+			return true;
+		} else
+			return false;
+	}
+
+	void remove(Actor *member) {
+		int     i;
+
+		for (i = 0; i < _memberCount; i++) {
+			if (_members[i] == member) {
+				_memberCount--;
+
+				for (; i < _memberCount; i++)
+					_members[i] = _members[i + 1];
+
+				break;
+			}
+		}
+	}
+
+	void remove(int index) {
+		assert(index < _memberCount);
+
+		int     i;
+
+		_memberCount--;
+
+		for (i = index; i < _memberCount; i++)
+			_members[i] = _members[i + 1];
+	}
+
+	int size() {
+		return _memberCount;
+	}
+	Actor *const &operator [](int index) {
+		return _members[index];
+	}
+};
+
+} // end of namespace Saga2
+
+#endif